XML 79 R15.htm IDEA: XBRL DOCUMENT v2.4.0.6
Employee Benefits
3 Months Ended
Mar. 31, 2012
Employee Benefits [Abstract]  
Employee Benefits Note 8 Employee Benefits
     

Note 8

  Employee Benefits

The components of net periodic benefit cost for the Company’s retirement plans were:

 

                                 
    Three Months Ended March 31,  
    Pension Plans     Postretirement
Welfare Plan
 
(Dollars in Millions)   2012     2011     2012     2011  

Service cost

  $ 32     $ 30     $ 1     $ 1  

Interest cost

    42       42       2       2  

Expected return on plan assets

    (48     (52           (1

Prior service cost (credit) and transition obligation (asset) amortization

    (1     (2            

Actuarial loss (gain) amortization

    40       31       (2     (1
                                 

Net periodic benefit cost

  $ 65     $ 49     $ 1     $ 1